Memory

Question 1

memory store

Answer 1

where information goes to

Question 2

what are the 3 memory stores?

Answer 2

-sensory register
-short term memory
-long term memory

Question 3

properties of memory stores

Answer 3

coding- format in which info is stored
capacity - how much
duration - how long

Question 4

main categories of (en)coding

Answer 4

sensory coding-: store sensory information
coding is modality specific(depends on the sense)
acoustic- store info about sound
visual code - store info about images
semantic coding- : stores info according to its meaning

Question 5

types of LTM

Answer 5

semantic - knowledge about the world
procedural - memory of actions and skills, how to do smth.
episodic - memory of specific episodes/persona experiences
episodic and semantic require conscious recall and are declarative
procedural–non-declarative

Question 6

features of the sensory register
(coding, capacity, duration)

Answer 6

capacity—- large
duration—–1-2 secs
coding—– sensory codin

Question 7

features of LTM
(coding, capacity, duration)

Answer 7

capacity—- unlimited
duration—- lifetime
coding—– semantic coding

Question 8

features of STM
(coding, capacity, duration)

Answer 8

capacity—- 7+_ 2 items
duration—- 18-30 secs
coding—– acoustic encoding

Question 9

what is the multi store model of memory?

Answer 9

-3 separate memory stores
-info is unidirectional
(sensory register–>STM—->LTM)
- memory transferred across memory stores

Question 10

Steps for how MSM works

Answer 10

sensory register—->#STM—>#LTM

1) sensory info(sound, smell,sight) pass into sensory register
2) info is passed from sensory register to STM only if you PAY ATTENTION to it
3) info stays in STM by maintenance rehearsal(repeating info to yourself)
4)info passed from STM to LTM by prolonged rehearsal.
5) in order to recall info , retrieval must occur— passing info back into STM

Question 11

evidence for coding (A01)

Answer 11

Baddeley
used acoustically similar and semantically similar words and tested the recall from pps.
immediate recall—acousticlly worse
recall after 20 min—-semantically worse
conc—
STM- acoustic
LTM- semantic

Question 12

evidence for capacity(AO1)

Answer 12

Jacobs(STM)
-developed digit span
-participants had to recall digits in correct order which increased until they could no longer recall
digit span=9.3
Miller(STM)
7+-2 items
can be improved by chunking items into meaningful units

Question 13

evidence for duration(A01)

Answer 13

Peterson and Peterson
participants shown a trigram of cosnonant syllables(KRF) and a 3 digit number while counting backwards.
after 18 seconds, 90% failed recall
STM without rehearsal is 18-30s
Barhick et al
tested free recall and photorecognition of participants with their high school yearbook
findings-
after 50 years, 70% recognised their classmates
30% could free recall
support for LTM

Question 14

evaluate evidence for coding (A03)

Answer 14

Baddeley
s- founded two distinct memory stores
helped for the development of MSM
w- artificial stimuli, meaningless stimuli, limited application of findings

Question 15

evaluate evidence for capacity(AO3)

Answer 15

-lacks internal validity
Jacob’s research conducted a long time ago and early reserach into psych lacks adequate control.
results may not be accurate
reliability and validity questioned

Question 16

evaluate evidence for duration(A03)

Answer 16

Bahrick
s-high ecological validity
meaningful memories, real life event
Peterson and peterson
w- artificial stimuli, meaningless stimuli, does not reflect everyday life, lacks external validity

Question 17

evaluation for types of LTM

Answer 17

(S)-case studies. Clive wearing had damage to his episodic memory but not his procedural memory. he still had semantic memory(understood the meaning of words) and walk. Clive, who was a professional musician still knew how to play and read music. Supports that there are diff types of LTM.
(W)- A weakness with this study is it is based on a single individual, therefore, making it difficult to generalise the findings to the wider population as deficits in memory may be unique to this one person.
(S)-Brain imaging studies shows that diff parts of brain are active when we ise 3 diff types of LTM. the hippocampus is active-epidisodic
temporal-semantic
cerebellum-procedural
(w)- squire and zola
people with damage to their temporal lobe had impairments in their semantic and episodic memories. They mayn’t be distinct memory stores.
alternative exp.—> semantic memories start as episodic memories

Question 18

what is elaborative reherasal

Answer 18

linking information to existing knowledge

Question 19

weakness of MSM

Answer 19

more than one STM store

Question 20

KF study(clinical case)

Answer 20

KF had amnesia
KF’s short term memory was poor when he heard words
KF’s short term memory was better when he read words
there may be separate stores for auditory and visual information in STM=STM is not only acoustic coding

Question 21

working memory model models….

Answer 21

short term memory

Question 22

central executive

Answer 22

supervisory role
manages activity of slave systems
allocates the other memory stores tasks
limited storage and capacity(1-2 secs)
CE can become overloaded if you are somehow distracted, there is limited attention

Question 23

what does the central executive NOT do?

Answer 23

store information

Question 24

phonological loop

Answer 24

-acoustic coding
-phonological store—- stores words you hear
articulatory loop—– allows maintenance rehearsal (inner voice)

Question 25

visuo-spatial sketchpad

Answer 25

visual cache- stores visual data inner scribe- stores spatial data capacity= 3-4 items

Question 26

episodic buffer

Answer 26

temporary store. capacity=4 chunks it can pass info to LTM to form episodic memories

Question 27

evaluation for WMM

Answer 27

strengths---clinical support - KF study -brain imaging studies shows that different parts of the brain are active during verbal and visual memory tasks- suggests separate memory stores weaknesses--- KF study we dk if he had other cognitive impairments which may have affected his performance in the memory tasks central executive is described as just attention. may also have many separated components( independent cognitive processes) but we dk. it is not falsifiable w- evidence relies on lab studies so it may not generalise(lacks mundane realism)

Question 28

Factors that make our memories less accurate leading to false memories:

Answer 28

-schemas incorrectly modify memories to be more consistent with our schema -leading questions wording of the question influences how participants answer -post event discussion when eyewitnesses talk about event with each other -anxiety negative effect of anxiety - accuracy worse positive effect of anxiety- accuracy better

Question 29

research support for leading questions (AO1)

Answer 29

loftus and palmer how accurate can pps remember a video of a car crash? Post-watch, they asked leading questions for how quickly the cars were going. They changed the intensity of the verb for when the cars hit ie. contacted//smashed contacted=lower mph smashed -higher mph

Question 30

implicit memory

Answer 30

information we unconsciously remember ie. procedural memories

Question 31

explicit memory

Answer 31

information we have to consciously work to remember ie. semantic and episodic memories.

Question 32

cognitive interview

Answer 32

questioning technique that improves an eyewitnesses's testimony by aiming to retrieve accurate memories

Question 33

name the 4 cognitive interview techniques and explain each one

Answer 33

-reinstate the context mental reinstatement witness describes thoughts, feelings and experiences at time of event helps identify external and internal cues that triggers their memory -report everything report tiny details triggers internal and external cues gives important information -change perspective recall an event from someone else's perspective-----> reduces the witness' reliance on their own schema--- stops them from misremembering memories -reverse the order remember event in a different chronological order. because ppl are more likely to remember what happened at the start/end than the events in the middle

Question 34

define misleading information

Answer 34

before an eyewitness is asked to recall what happened, they are exposed to misleading information

Question 35

loftus and palmer 'glass' finding

Answer 35

participants that were asked the question with' smashed' in it were more likely to report seeing broken glass when there wasn't any broken glass

Question 36

strength of Loftus and Palmer research

Answer 36

practical application for police and lawyers lead to the development of the cognitive interview which avoids the use of leading questions open ended questions are asked instead more accurate information and prevents people from being charged for crimes they did not commit

Question 37

what is post event discussion?

Answer 37

witnesses of the same event discuss the event after it has occurred

Question 38

Gabbert et al research on post event discussion(AO1)

Answer 38

-participants were paired -they watched the same crime but from different perspectives(angles) -they discussed the (video)crime afterwards -71% recalled information they had gathered form other witnesses happens because of memory conformity--- people go along with others to win social approval or they believe the other witness is right

Question 39

define weapons focus

Answer 39

concentration of a witness's attention on a weapon---- reduces their ability to remember other details of the crime(tunnel theory)

Question 40

Johnson and Scott - negative effect of anxiety on eyewitness testimony study (AO1)

Answer 40

-Participants were in a waiting room for a study low anxiety condition argument next door. man walks out of room holding a pen high anxiety condition argument next door(with chairs crashing etc.) man walks out holding a bloody knife after, pps asked to identify the face of the man from a selection of 50 photos 49% in low anxiety group could do so compared to 33% in the high anxiety group can be explained by weapons focus

Question 41

Yuille and Cutshall- positive effects of anxiety

Answer 41

-natural experiment -people who were eyewitnesses to a real life robbery -13 witnesses interviewed -4 months after incident those who reported the most stress reported the most accurate accounts of the robbery 4 months later

Question 42

fight or flight effect on memory

Answer 42

improves your alertness improves your memory

Question 43

Yerkes-Dodson law- explanation for effects of anxiety on eyewitness testimony

Answer 43

lower levels of anxiety produce lower levels of recall which improves with more anxiety, up to a certain point (maximum accuracy). After this point, any further stress will have a negative effect on recall. like the effect of temperature on enzymes -think about it.

Question 44

evaluation of yuille and cutshall research

Answer 44

-high ecological validity -lack of control of extraneous variables-pps could have been influenced by post event discussion e.g. those who reported higher distress and more accurate accounts had a closer proximity to crime scene proximity= extraneous variables makes it harder to establish a cause and effect relationship between high anxiety and eyewitness testimony

Question 45

limitation of johnson and scott study

Answer 45

ethical issues

Question 46

what leads to interference

Answer 46

the more similar information is, the more it leads to interference

Question 47

define interference

Answer 47

when 2 memories conflict each other and get mixed up